Reversible steam-turbine.



R. W. HOLDEN.

REVERSIBLE STEAM TURBINE.

APPLICATION FILED AUG-l. 19H- Patented Nov. 12, 1918.

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R. W. HOLDEN.

REVERSIBLE STEAM TURBINE.

APPLICATION FILED AUGJ, I91].

1. ,28,897B Patented Ndv. 12, 1918.

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R.'W. HOLDEN.

REVERSIBLE STEAM TURBINE. APPLICATION FILED AUG.I, 1911.

Patented Nov. 12, 1918 3 SHEETS-SHEEI 3.

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REVERSIBLE STEAM-TURBINE.

Application filed August 1, 1917.

To all whom it may concern:

Be it known that 1, ROBERT WILLIAM HOLDEN, citizen of the Dominion of New Zealand, residing at Onewa street, Birkenhead, in the Provincial District of Auckland, New Zealand, have invented certain new and useful Improvements in a Reversible Steam-Turbine, of which the following is a specification.

This invention relates to steam turbines of the reversible kind and consists of a turbine wherein the steam is used successively in a-series of circumferential sections of a rotor, and in either direction circumferentially before reaching the atmosphere through an exhaust port.

In carrying out the invention, radial blades separated by rings or flanges are fixed to a rotor, which is adapted to rotate in a casing, divided into sections by circumferential partitions. A steam admission valve in a valve chest is adapted to open one or other of tangential ports leading from the valve chest to the first section of'the casing and rotor. An exhaust port diametrically opposite to the valve chest leads from the casing to another valve chest. Steam from this second valve chest passes through a port in the first partition and to a second steam admission valve, which controls the steam leading to the second section of the casing and rotor. From the said second section the steam passes to a third section, and if desired to other sections, until the steam finally reaches the atmos phere or a condenser through an exhaust Yport. The casing is made in two parts olted together, for the introduction of the rotor, and has bearings for the shaft of the rotor.

The valves are operated simultaneously by a system of levers, so that ports arranged in the same tangential direction may be opened simultaneously, while at the same time ports arranged in an opposite tangential direction may be closed.

The drawing herewith illustrates the invention, and will now be referred to for the purpose of a detailed description Figure 1, is a side elevation, and

Fig. 2, an end elevation of the turbine,

Fig. 3, is a longitudinal section on line 3-3, Fig. 2,

Fig. 4, is a cross sectional elevation on line 4-4, Fig. 1,

Specification of Letters Patent.

Patented Nov. 12, 1918.

Serial No. 183,923.

Fig. 5, is a plan of the turbine, and

Fig. 6, is a cross sectional elevation on line 6-6, Fig. 1.

The casing is made in two parts 10 and 11 secured together by bolts 12 and has end covers 13 and 14 provided with bearings 15 and 16 respectively for the shaft 17 of a rotor 18. The casing has a plurality of partitions, and in the drawin a construction with two partitions 19 M1520 is shown.

A valve chest 21 extending throughout the length of the casing is arranged upon one side thereof and a similar valve chest 22 is arranged on the diametrically opposite side of the casing. These valve chests 21 and 22 are divided into sections 23, 24 and 25 by the partitions 19 and 20.

The section 23 contains a slide valve 26, operable by a rod 27 and lever 28 adapted to open either of the ports 29 and 30, which extend the full length of, and lead from, the section 23 to the interior of the casing and in tangentially opposite directions.

An exhaust port 32 extends the full length of, and leads from, the casing to section 23 of the valve chest 22.

The rotor 18 has a plurality of radial blades 33 with screwed stems 34 and nuts 35, whereby the said blades are fixed in position. The blades are made spoon shape on both sides by forming recesses or hollows 36 in their faces.

The blades are arranged in rows longitudinally of the rotor and are divided into sections by the partitions 19 and 20, While the said blades are divided into circumferential rows by rings or flanges 37. The.

steam entering through the port 29 or 30 is well distributed upon the blades 33 by the said rings or flanges.

A port 39 leads from section 23 of the valve chest 22 to section 24 thereof and to a slide valve 41, which is held up to its seat 42 by a rib 43, which slides on the cover 44 of the valve chest 22. The valve 41 is adapted to open the port 4-4 and close the port 45, or vice versa, and is operated by a lever 46 fixed to a rocking shaft 47 to which the lever 28 is also fixed, so that when the lever 28 is operated the lever 46 is operated simultaneously in an opposite direction.

A port 51 leads from section 24 to sec tion 25 of the valve chest 21 and to a valve 52 which controls tangential ports similar to the ports 29 and 30, and'the said section 25 has an exhaust port 53 leading to the atmosphere or to a condenser.

Throughout the turbine the steam admission valve and the exhaust port are located on diametrically opposite sides of the casing in each section, and so that the steam Valve of any one section is on the side of the casing diametrically opposite to the steam valve of an adjacent section or sections.

What I do claim and desire to secure by Letters Patent of the United States is A reversible steam turbine comprising a stationary cylinder having closed ends, a rotor rotatably mounted in said cylinder and having radially disposed vanes provided on each side With spoon shaped recesses, valve chests arranged on diametrically opposite sides of the cylinder, circumferentially arranged partitions located in the cylinder and extending to the rotor and into the valve chests for dividing the valve chest and the space between the cylinder and rotor into three compartments, tWo oppositely disposed tangentially arranged ports connecting each of the end chambers of one of the valve chests With the interior of the cylinder for directing steam from the said valve chest into the end compartments of the rotor, exhaust ports connecting the end compartments of the rotor With the end compartments of the other valve chest, an exhaust port connecting the intermediate compartment of the rotor With the intermediate compartment of the first valve chest, two oppositely disposed tangentially arranged ports connecting the intermediate compartment of the rotor With the intermediate compartment of the second valve chest, a port connecting one of the end compartments of the second valve chest with the intermediate compartment of that chest, another port connecting the intermediate compartment of the first chest With one of the end compartments of that chest, sliding valves located in the end compartments of the first chest and intermediate compartment of the second chest and adapted to open and close the tangentially arranged ports, a single means for simultaneously moving all of the valves, a steam inlet connected to one of the end chambers of the first chest, and an exhaust port placing the opposite end chamber of the second chest in communication With the atmosphere.

In testimony whereof I aflix my signature in presence of tWO Witnesses.

ROBERT WILLIAM HOLDEN.

Witnesses:

EDWARD HARVEY MARTIN, ll. F. MoCoNNEn Copies of 1:111: patent may be obtained for five cents each, by addressing the Commissioner 0:! Patents, Washington, D. G. 

